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| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2007-07-18 02:44:12 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-08-09 14:27:27 -0700 |
| commit | 9bff1948de46273efed6801db7e6b822b88b6f9a (patch) | |
| tree | e94e31c50b6eeee8a04b40a4e67311d709356ce4 /net/sctp | |
| parent | 420eb87364de03770d377007ea1173e0ffb1cb21 (diff) | |
| download | linux-stable-9bff1948de46273efed6801db7e6b822b88b6f9a.tar.gz linux-stable-9bff1948de46273efed6801db7e6b822b88b6f9a.tar.bz2 linux-stable-9bff1948de46273efed6801db7e6b822b88b6f9a.zip | |
SCTP scope_id handling fix
SCTP: Add scope_id validation for link-local binds
SCTP currently permits users to bind to link-local addresses,
but doesn't verify that the scope id specified at bind matches
the interface that the address is configured on. It was report
that this can hang a system.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/ipv6.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index 2c29394fd92e..2164b511fe51 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -875,6 +875,10 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr) dev = dev_get_by_index(addr->v6.sin6_scope_id); if (!dev) return 0; + if (!ipv6_chk_addr(&addr->v6.sin6_addr, dev, 0)) { + dev_put(dev); + return 0; + } dev_put(dev); } af = opt->pf->af; |